If you want to create a derivative of any Fedora/CentOS distribution, that's not hard. But if you're trying to recreate, that's a different story. You have to care about things like build sequencing, NVRs, etc.
For example, if I'm creating Kudo Linux as a RHEL-compatible distribution by deriving from CentOS Stream, I only need to swap the branding packages and call it a day. The rest of my engineering effort can be spent in Fedora or CentOS Stream as appropriate. But if I'm creating Kudo Linux as a distribution that re-creates RHEL, then I need all the source packages to build, figure out build orders, and swap out branding. I also have to do my own lifecycling and validation. I am also now responsible for the maintenance of all the software and ensuring people get updates.
One is easy. The other isn't.
If Suse thinks they are going to make money in this space via support contracts rather than licensing, it's sort of a "commoditize your complements" thing...commoditizing the paid license subscription part. That's a guess though. It's not clear to me how they plan to make money with this move.
- damage and embarrass Red Hat, their direct competitor - enhance their own brand, brand awareness, and reputation with customers of their competitor. Sell more of their own existing enterprise offerings as a result. - create an alternative distribution that they can monetize if it turns out to be more popular than their own offerings ( even if only in one geography )